Question: Which referendum in Ireland, following the Eighth Amendment of the Constitution of Ireland, has the least amount of spoiled votes?
Paraphrase: Which poll in Ireland has the fewest number of invalid votes, following the Eighth Amendment of the Irish Constitution.
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q54086790 . ?ent wdt:P5044 ?obj . ?ent wdt:P155 wd:Q4126745} ORDER BY ASC(?obj)LIMIT 5